1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
|
# getresuid __________________________________________________
# long sys_getresuid(uid_t __user *ruid,
# uid_t __user *euid,
# uid_t __user *suid)
@define _SYSCALL_GETRESUID_NAME
%(
name = "getresuid"
%)
@define _SYSCALL_GETRESUID_ARGSTR
%(
argstr = sprintf("%p, %p, %p", ruid_uaddr, euid_uaddr, suid_uaddr)
%)
@define _SYSCALL_GETRESUID_REGARGS
%(
ruid_uaddr = pointer_arg(1)
euid_uaddr = pointer_arg(2)
suid_uaddr = pointer_arg(3)
%)
@define _SYSCALL_GETRESUID_REGARGS_STORE
%(
if (@probewrite(ruid_uaddr))
set_pointer_arg(1, ruid_uaddr)
if (@probewrite(euid_uaddr))
set_pointer_arg(2, euid_uaddr)
if (@probewrite(suid_uaddr))
set_pointer_arg(3, suid_uaddr)
%)
probe syscall.getresuid = dw_syscall.getresuid !, nd_syscall.getresuid ? {}
probe syscall.getresuid.return = dw_syscall.getresuid.return !, nd_syscall.getresuid.return ? {}
# dw_getresuid _____________________________________________________
probe dw_syscall.getresuid = kernel.function("sys_getresuid16").call ?,
kernel.function("sys_getresuid").call
{
@_SYSCALL_GETRESUID_NAME
ruid_uaddr = @choose_defined($ruidp, $ruid)
euid_uaddr = @choose_defined($euidp, $euid)
suid_uaddr = @choose_defined($suidp, $suid)
@_SYSCALL_GETRESUID_ARGSTR
}
probe dw_syscall.getresuid.return = kernel.function("sys_getresuid16").return ?,
kernel.function("sys_getresuid").return
{
@_SYSCALL_GETRESUID_NAME
@SYSC_RETVALSTR($return)
}
# nd_getresuid _____________________________________________________
probe nd_syscall.getresuid = nd1_syscall.getresuid!, nd2_syscall.getresuid!, tp_syscall.getresuid
{ }
probe nd1_syscall.getresuid = kprobe.function("sys_getresuid16") ?,
kprobe.function("sys_getresuid") ?
{
@_SYSCALL_GETRESUID_NAME
asmlinkage()
@_SYSCALL_GETRESUID_REGARGS
@_SYSCALL_GETRESUID_ARGSTR
}
/* kernel 4.17+ */
probe nd2_syscall.getresuid = kprobe.function(@arch_syscall_prefix "sys_getresuid") ?,
kprobe.function(@arch_syscall_prefix "sys_getresuid16") ?
{
__set_syscall_pt_regs(pointer_arg(1))
@_SYSCALL_GETRESUID_NAME
@_SYSCALL_GETRESUID_REGARGS
@_SYSCALL_GETRESUID_ARGSTR
},
{
@_SYSCALL_GETRESUID_REGARGS_STORE
}
/* kernel 3.5+, but undesirable because it affects all syscalls */
probe tp_syscall.getresuid = __tp_syscall.getresuid, __tp_syscall.getresuid16
{
__set_syscall_pt_regs($regs)
@_SYSCALL_GETRESUID_NAME
@_SYSCALL_GETRESUID_REGARGS
@_SYSCALL_GETRESUID_ARGSTR
},
{
@_SYSCALL_GETRESUID_REGARGS_STORE
}
probe __tp_syscall.getresuid = kernel.trace("sys_enter")
{
@__syscall_compat_gate(@const("__NR_getresuid"), @const("__NR_compat_getresuid32"))
}
probe __tp_syscall.getresuid16 = kernel.trace("sys_enter")
{
@__compat_syscall_gate(@const("__NR_compat_getresuid"))
}
probe nd_syscall.getresuid.return = nd1_syscall.getresuid.return!, nd2_syscall.getresuid.return!, tp_syscall.getresuid.return
{ }
probe nd1_syscall.getresuid.return = kprobe.function("sys_getresuid16").return ?,
kprobe.function("sys_getresuid").return ?
{
@_SYSCALL_GETRESUID_NAME
@SYSC_RETVALSTR(returnval())
}
/* kernel 4.17+ */
probe nd2_syscall.getresuid.return =
kprobe.function(@arch_syscall_prefix "sys_getresuid").return ?,
kprobe.function(@arch_syscall_prefix "sys_getresuid16").return ?
{
@_SYSCALL_GETRESUID_NAME
@SYSC_RETVALSTR(returnval())
}
/* kernel 3.5+, but undesirable because it affects all syscalls */
probe tp_syscall.getresuid.return = __tp_syscall.getresuid.return, __tp_syscall.getresuid16.return
{
__set_syscall_pt_regs($regs)
@_SYSCALL_GETRESUID_NAME
@SYSC_RETVALSTR($ret)
}
probe __tp_syscall.getresuid.return = kernel.trace("sys_exit")
{
@__syscall_compat_gate(@const("__NR_getresuid"), @const("__NR_compat_getresuid32"))
}
probe __tp_syscall.getresuid16.return = kernel.trace("sys_exit")
{
@__compat_syscall_gate(@const("__NR_compat_getresuid"))
}
|
